Colon carcinoma metastatic to the thigh--an unusual site of metastasis. Report of a case.

Metastasis from colorectal carcinoma occurs by either lymphatic or hematogenous spread. The pattern of metastasis in patients with colorectal malignancy has been characterized by numerous clinical, surgical, and autopsy studies. The most common sites of colorectal metastasis are the liver and lung. Only two previous instances of colorectal carcinoma metastatic to skeletal muscle have been reported. The present report documents the third case of colorectal cancer metastatic to skeletal muscle and reviews the typical pattern of distant metastasis from colorectal carcinoma.